Complete the words with /spr/ or /str/

Complete the words with /spr/ or /str/.
      _ _ _ead                      air_ _ _ip                     e_ _ _esso                    _ _ _int
      ab_ _ _act                    _ _ _out                       hair_ _ _ing                 _ _ _ategy
      _ _ _ing                       blood_ _ _eam            _ _ _out                       _ _ _eadsheet
      _ _ _ites                       _ _ _ay                        _ _ _awl                      _ _ _ing
      a_ _ _onaut                 _ _ _etcher                  _ _ _aight                    in_ _ _ument